Here’s what’s being asked: you provided three words in Dutch/related languages: "hoe" (how), "vaak" (often/how often), and "supermaan" (supermoon). I’ll break down the likely intent and answer succinctly. Direct answer

• A supermoon occurs a few times each year. Most commonly, about 3–4 times annually, though some sources vary slightly (roughly 3–4 times per year). The exact dates depend on the Moon’s orbit and its position relative to perigee (the closest point to Earth) and the full moon phase.

If you’d like, I can tailor this to a specific country or provide the next visible supermoon dates for your location.